Thanks heaps! Very helpful. ... View more

Thanks a lot for your reply.   Yes, I agree the best way for me is to delete the record before adding. Do you know how to call the delete function (the syntax and what sort of parameters). I can't find any help or reference on that function. I am new to ClearSCADA.   Thanks a lot. ... View more

I have a question related to the code.   The following is my function and it works. But the issue is if the function is called multiple times with the same datetime value, then it inserts duplicated records in the historic list of the point.   For example, the list looks like this after the function is called 3 times with the same datetime value but different values.   Time                                             Value 25/05/2020 3:00:00.000 AM         3.123 25/05/2020 3:00:00.000 AM         4.866 25/05/2020 3:00:00.000 AM         3.332   What I want is the historic list only contain the value set from the latest call. How to remove the duplicates and only store the latest value? Thanks a lot.   public bool WriteValueToAnalogPoint(string pointFullName, DateTime valueDateTime, double value)   { if (!IsConnected)   { throw new Exception("No connection.");   } try   { DBObject destination = this.connection.GetObject(pointFullName); Object[] args = new Object[4];   args[0] = 1; args[1] = QUALITY_GOOD; args[2] = valueDateTime; args[3] = value; destination.Aggregates[HISTORIC].InvokeMethod(FUNC_LOAD_DATA_VALUE, args); return true;   } catch(Exception ex)   { //todo: log the error return false;   } }   ... View more

Time Average = 30 StdDev = 5   Thanks a lot for your help! ... View more

Hi sbeadle,   Thanks heaps for answering my question.   I tried your solution and it works! The view in my question refers to the Historic Views defined in Historic Configuration.   Thank you again and have a nice day!   Kan ... View more